The following graph displays the net number of species listed under the U.S. Endangered Species Act between

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The following graph displays the net number of species listed under the U.S. Endangered Species Act between 1980 and 2002 (U.S. Fish and Wildlife Service 2001):

Number of species on list 1400 1200- 1000- 800- 600- 400- 200 1980 1985 1990 1995 2000 2005 Year

a. What type of graph is this?

b. What does the steepness of each line segment indicate?

c. Explain what the graph tells us about the relationship between the number of species listed and time.

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Related Book For  book-img-for-question

The Analysis Of Biological Data

ISBN: 9781319226237

3rd Edition

Authors: Michael C. Whitlock, Dolph Schluter

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